Nonslip attachment for shoes



July 24, 1934. J. CONWAY 1,967,867

NONSLIP ATTACHMENT FOR SHOES Filed July 27, 1935 J \\\\\\\X\/\\\\z\\\ 1/ INVENTOR 444m d Patented July 24, 1934 UNITED STATE$ PATENT GFFICE Claims.

My invention relates to improvements in nonslip attachments for shoes.

One of the objects of my invention is to provide a novel non-slip attachment adapted for fastening on the bottom of the sole of a boot or shoe, which will prevent slipping in walking, standing or running, which can be easily and quickly applied to or removed from a boot or shoe and which will be reliably held thereon when in use. A further object of my invention is the provision of a novel attachment of the kind described,

.which is simple, cheap, light, durable, not likely to get out of order, and which may be adjusted to fit soles of different widths, lengths and shapes.

The novel features of my invention are hereinafter fully described and claimed.

In the accompanying drawing which illustrates the preferred embodiment of my invention,

Fig. 1 is an under view of my improved attachment shown attached in operative position to the bottom of a shoe sole.

Fig. 2 is an edge view of the same.

Fig. 3 is a top View of the attachment detached from the shoe sole.

Fig. 4 is an enlarged section on the line 1-4 of Fig. 1.

Fig. 5 is a perspective view of the lever operated clamping member.

Fig. 6 is a perspective view of one of the front clamping members.

Similar characters of reference ilar parts in the different views.

1 designates a calked member comprising a plate, preferably of sheet metal adapted to be applied to the bottom of a shoe sole.

The under side of the calked member 1 is provided with suitably arranged spikes or calks 2 adapted to engage the ground or ice to prevent slipping.

The forward portion of the calked member 1 is provided with means for releasably gripping opposite edges of the sole 3 of the shoe or boot. Such gripping means comprises, as shown, two clamping members 4 and 5, each having therethrough a longitudinal slot 6 through which extends a rivet l the upper end of which is fastened to the calked member 1.

The members l and 5 are disposed in transverse alinement across the under side of the calked member 1 and are respectively provided with threaded holes 8. The hole 8 in each member 4 and 5 is adapted to register with any of a plurality of holes 9 adjacent to the member and extending through the calked member 1. There are two sets of such holes 9, the holes of designate simeach set being disposed in a transverse row at different distances from the adjacent side edge of the calked member 1.

Two fastening members comprising two screws 10 are respectively fit ed in the threaded holes 8 and respectively extend through the holes 9 which at the time respectively register with the holes 8. By removing the screws 10, the clamping members l and 5 can be transversely adjusted to a position in which the holes 8 register with the desired holes 9, whereby the device is adapted to be fitted to soles 3 of different widths.

For releasably clamping to the sole 3 the rear end of the calked member 1, the following described mechanism is employed.

The calked member at its rear end is provided with means for releasably gripping one edge of the sole 3, such means, as shown comprising a plate 11 welded or otherwise fastened to the under side and extending transversely of the member 1.

The member or plate 11 is provided at its outer end with a hook 12 which extends upwardly and then inwardly and which is adapted to receive and to grip the adjacent edge of the sole 3.

The clamping members 4 and 5 are also respectively provided with hooks 13 and 14, similar to the hook 12, and which are adapted to releasably grip opposite edges of the sole 3.

For gripping the edgeof the sole which is opposite to the edge gripped by the hook 12, there is provided a clamping member 15 having at its outer end a hook 16 adapted to grip the adjacent edge of the sole 3. The clamping member 15 is reciprccative transversely to and from the clamping position shown in solid lines in Figs. 1 and 3 by a lever 17 which is oscillative on a pivot member 18 comprising, as shown, a shouldered screw the threaded end of which is adapted to be fitted in of a plurality of threaded holes 19 disposed in a transverse row at difierent distances from either side edge of the calked member 1 and extending through the member 1 and the plate 11.

By adjusting the screw 18 in different ones of the holes 19, the lever 1'? may have its axis transversely adjusted.

Eccentrically pivoted to the lever 17 by a pivot pin 20, the clamping member 15 may, upon the oscillation of the lever, be moved from the clamping position shown in solid lines in Figs. 1 and 3 to the released position, shown in'dotted lines in Fig. 1.

The pivotal connection, comprising the pin 20, between the clamping member 15 and the lever 17, will move from the release position, shown in dotted lines in Fig. 1, to a substantially dead center position at the side of the pivot screw 12 distant from the hook 16 of the clamping member 15, when the lever 17 is swung from the release position, shown in dotted lines in Fig. 1, to the position transversely under the sole 3, as shown in solid lines in Figs. 1 and 3.

the latter position, the clamping member 15 will have been retracted tothe clamping position, shown in solid lines in Figs. 1 and 3, in which position, the hook 16 will grip the adjacent edge of the sole 3.

The end portion of the clamping member 15, which is pivoted to the lever 1'7 is arcuate, as shown in Fig. 5, to enable the clamping member 15 taking the position shown in solid lines in Fig. 1.

To guide the clamping member 15 it is provided with a longitudinal slot 21 through which extends a rivet 22 the upper end of which is fastened to the plate 11 and the calked member 1, Fig. 4.

In adapting the attachment to a boot or shoe sole the clamping members 4 and 5, or one of them, is adjusted transversely by removing the screw or screws 10 and fitting them in the holes 9 and the holes 8 which will bring the hooks 13 and 14 to the proper spaced relation with each other suitable for the particular width of the sole 3 where engaged by the hooks.

The pivot screw 18 is then fitted in the lever 17 and in the hole 19 which will afford proper spacing of the hooks l2 and 16 suitable for the width of the hole 3 where engaged by said hooks.

The hooks 13 and 14 are then engaged with the opposite edges of the sole 3, the calked memher being disposed fiatwise as shown on the bottom of the sole 3. The lever 17 is then swung from the released position, shown in dotted lines in Fig. 1, to the clamping position, shown in solid lines in said figure. The pivot pin 20 will be forced from the position shown in dotted lines in Fig. 1 to the substantially dead center position shown in solid lines in Fig. 1, thus causing the hooks 12 and 16 to have gripping engagement with the sole 3, in which engagement they will be reliably held due to the position of the pivot pin 20.

As shown, the hook 16 is encircled by a rubber ring 23 which, in the clamping position bears against the adjacent edge of the sole 3 and holds the hook from slipping, as well as serving as a resilient bearing against the sole so as to afford a yielding effect when the lever is operated to clamp the sole. In the drawing, the member 1 is shown as shaped for the right hand shoe. For the left hand shoe the calked member 1 will be shaped to conform to left hand shoe soles. Aside from this the structure and mode of operation corresponds, for the left hand shoe use, to that shown and described.

Various modifications of my invention, within the scope of the appended claims, may be made without departing from the spirit of my invention.

What I claim is 2-- 1. In a non-slip attachment for a shoe, a calked member adapted for application to the bottom of the shoe sole, means on said member for releasably gripping one edge of the sole, a clamping member having means for releasably gripping the opposite edge of the sole, and a lever pivoted to said calked member and eccentrically pivoted to said clamping member and movable to and from a clamping position in which the pivotal connection of said clamping member will be substantially on dead center at the side of the axis of said lever distant from said gripping means of said clamping member.

2. In a non-slip attachment for a shoe, a calked member adapted for application to the bottom of the shoe sole, means on said member for releasably gripping one edge of the sole, a clamping member having means for releasably gripping the opposite edge of the sole, and a lever having pivotal connection with said calked member and having eccentric pivotal connection with said clamping member and movable to and from a clamping position in which the last named pivotal connection will be substantially on dead center at the side of the axis of said lever distant from said gripping means of said clamping member, one of said connections being adjustable transversely between opposite edges of said calked member.

3. In a non-slip attachment for a shoe, a calked member adapted for application to the bottom of the shoe sole, means on said member for releasably gripping one edge of the sole, a clamping member having means for releasably gripping the opposite edge of the sole, and a lever having piv otal connection with said calked member and having eccentric pivotal connection with said clamping member and movable to and from a clamping position in which the last named pivotal connection will be substantially on dead center at the side of the axis of said lever distant from said gripping means of said clamping member, said pivotal lever connection being adjustable transversely on said calked member.

4. In a non-slip attachment for a shoe, a calked member adapted for application to the bottom of the shoe sole, and having holes disposed at difierent distances from one edge of said member, means on said member for releasably gripping one edge of the sole, a clamping member having means for releasably gripping the opposite edge of the sole, a pivot member insertible in any of said holes, and a lever cscillative on said pivot member and having eccentric pivotal connection with said clamping member and movable to and from a clamping position in which said pivotal connection will be substantially on dead center at the side of said pivot member distant from said gripping means or" said clamping member.

5. In a non-slip attachment for a shoe, a calked member adapted for application to the bottom of the shoe sole, and having threaded holes at different distances from one edge of said member, means on said member for releasably gripping one edge of the sole, a clamping member having means for releasably gripping the opposite edge of the sole, a threaded member adapted to be fitted in any of said holes, and a lever oscillative on said threaded member and having eccentric pivotal connection with said clamping member and movable to and from a clamping position in which said pivotal connection will be substantially on dead center at the side of the threaded member distant from said gripping means of said clamping member.

THOMAS J. CONWAY. 

